{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["person", "location", "time", "law", "quantity", "geographical social political"], "input": "\" Five years ago , when China 's digital telephone program - controlled switch market was monopolized by various brands of foreign products , we worried about whether China could successfully develop digital program - controlled switches ."}
{"person": [], "location": [], "time": [], "law": [], "quantity": [], "geographical social political": ["China"]}